Which color to buy a leather holdall in?

since I've been using the same Addidas sports bag for staying overnight at my girlfriends for almost 3 years now and I managed to break one of the handles, I think it's time for a new holdall.

I've wanted to get one for a while now, but the one thing I really can't decide on is the color. I wanna go classic, so it's going to be either brown or black. Does the bag have to match my other leathers, too?

It's not such a big deal but it should match. I'd go for tan- because it can work with black.
How much black do you wear? If lot's of, a black one will be fine as well, especially if your brown shoes aren't dark.